8th grade Chemical Bonding

What type of bond is the joining of atoms to form new substances?

• Metallic Bond

• Chemical Bond

• Covalent Bond

• Ionic Bond

Tags

NGSS.HS-PS1-1

What is formed when electrons are shared, gained, or lost?

• Overlapping atoms

• Valence electrons

• Energy levels

• Chemical bonds

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NGSS.HS-PS1-1

Neutrons in an atom are organized into energy levels.

• False

• True

The ______ ______ of an element is the number of electrons in that element.

• energy levels

• chemical bonds

• atomic number

• valence electrons

Tags

NGSS.HS-PS1-1

How many electrons can the first energy level hold?

• 3

• 2

• 8

• None

Tags

NGSS.HS-PS1-1

How many electrons can the second energy level?

• 8

• 6

• 2

• 10

Tags

NGSS.HS-PS1-1

The electrons in an atom's outermost energy level, _______ _________, forms bonds between most atoms.

• chemical bonds

• proton and neutrons

• valence electrons

• atomic number

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does oxygen have?

(hint: oxygen's atomic number is 8)

• 6

• 1

• 8

• 2

Tags

NGSS.HS-PS1-1

Chlorine has 17 electrons. How many valence electrons does it have?

• None

• 6

• 2

• 7

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Atoms with how many valence electrons don't usually form bonds?

• 4 electrons

• None

• 7 electrons

• 1 electron

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2